Income Taxes - Narrative (Details) kr in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 DKK (kr)	Jun. 30, 2025 USD ($)
Income Taxes [Line Items]
Total Net Discrete Income Tax Expense (Benefit)	$ (1.0)	$ (12.3)	$ (3.1)		$ (11.7)
Income Tax Discrete Adjustments - Return-To-Provision Adj [Member]
Income Taxes [Line Items]
Total Net Discrete Income Tax Expense (Benefit)	0.4	5.2	1.9		6.8
Income Tax Discrete Adjustments - Change to Uncertain Tax Positions [Member]
Income Taxes [Line Items]
Total Net Discrete Income Tax Expense (Benefit)	$ (1.5)		(5.0)		(3.6)
Income Tax Discrete Adjustments - Valuation Allowance Recognition
Income Taxes [Line Items]
Total Net Discrete Income Tax Expense (Benefit)					2.6
Income Tax Discrete Adjustments - Tax on sale of Watson Fuels [Member]
Income Taxes [Line Items]
Total Net Discrete Income Tax Expense (Benefit)		$ (17.4)			$ (17.4)
Danish Tax Authority \| Tax Years 2013 through 2019 [Member] \| Foreign Tax Authority
Income Taxes [Line Items]
Estimated tax			120.1	kr 785.7
Danish Tax Authority \| Tax Years 2020 through 2021 [Member] \| Foreign Tax Authority
Income Taxes [Line Items]
Estimated tax			$ 28.2	kr 184.8